$ git clone -n https://src.fedoraproject.org/rpms/signon-kwallet-extension.git /var/lib/mock/f42-build-side-1-3536520-46558/root/chroot_tmpdir/scmroot/signon-kwallet-extension
Cloning into '/var/lib/mock/f42-build-side-1-3536520-46558/root/chroot_tmpdir/scmroot/signon-kwallet-extension'...
$ git fetch origin baee28d37f9bf488dbe4212805915ee21b0951c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/signon-kwallet-extension
 * [new ref]         baee28d37f9bf488dbe4212805915ee21b0951c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at baee28d 25.04.2